/*
 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

#include "config.h"
#include "DisplayRefreshMonitorJava.h"

#if USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)

namespace WebCore {

DisplayRefreshMonitorJava::DisplayRefreshMonitorJava(PlatformDisplayID displayID)
    : DisplayRefreshMonitor(displayID)
    , m_pulseTimer(*this, &DisplayRefreshMonitorJava::displayLinkFired)
{
}

DisplayRefreshMonitorJava::~DisplayRefreshMonitorJava()
{
}

bool DisplayRefreshMonitorJava::requestRefreshCallback()
{
    if (!isActive() || m_pulseTimer.isActive())
        return false;

    // start pulse timer to get callback as soon as possible
    m_pulseTimer.startOneShot(0_s);

    LockHolder lock(mutex());
    setIsScheduled(true);
    return true;
}

void DisplayRefreshMonitorJava::displayLinkFired()
{
    {
        LockHolder lock(mutex());
        if (!isPreviousFrameDone())
            return;

        setIsPreviousFrameDone(false);
    }
    ASSERT(isMainThread());
    handleDisplayRefreshedNotificationOnMainThread(this);
}

} // namespace WebCore

#endif // USE(REQUEST_ANIMATION_FRAME_DISPLAY_MONITOR)

